Interval timer



Oct. 7, 1941.. I Q B slMMQNs 2,258,474

INTERVAL TIMER Filed Jan. l5, 1938 3 Sheets-Sheet 2 Oct. 7, 1941. 0. B. slMMoNs 2,258,474

INTERVAL TIMER Filed Jan. l5, 1958 3 Sheets-Sheet 3 Patented Oct. 7, 1941 UNITED STATES PATENT OFFICE INTERVAL TIMER Charles B. Simmons, Bristol, Conn., assignor to The Sessions Clock Company,

Forestville,

6 Claims.

This invention relates to improvements in interval timers.

One object of this invention is to provide an improved interval timer of superior construction, whereby the pointer can be Wound orv turned to time-set position without the need of operating any separate release.

Another object of this invention is to provide an improved interval timer having a single iinger which performs the cooking or setting and the releasing actions.

. Another object of this invention is to provide anl improved interval timer in which a single spring actuates the trigger and the actuatingarm.

Another object of this invention is to provide an improved interval timer in which the timetrain is relieved of restraint during the major portion of operation of the device by the timetrain.

Another object of this invention is to provide an improved interval timer formed of simple elements readily :manufactured and readily as-v sembled to produce a durable, eincient construction at minimum cost.

With the above and other objects in view, as. will appear to those skilled in the art from the present disclosure, this invention includes all features in the said disclosure which are novel over the prior art.

In the accompanying drawings, in which one way of carrying out the invention is shown for illustrative purposes:

Fig. 1 is a front elevation illustrating one embodiment of an interval timer made in accordance with the invention;

Fig. 2 is a side elevation of Fig. l, bell in vertical central section;

Fig. 3 is a rear elevation of Fig. 2, with the bell and part of its supporting-bracket omitted, and with the locking-and-cocking finger in the position corresponding to the Zero position of the indicating-pointer in Fig. 1;

Fig. 4 is a View similar to 3, with the mechanism in cocked position and with an additional broken-line position of the locking-andcocking nger corresponding to the broken-line position of the indicating-pointer in Fig. 1;

Fig. 5 is a view similar te Fig. 4, but with the locking-and-cooking finger in a position just prior to its pushing the trigger to releasing position;

Fig. 6 is a sectional View on line 6 6 of Fig. 2;

Fig. 7 is a sectional View on line of Fig. 6;

with the Fig. 8 is a perspective view of the bell-carrying bracket;

Fig. 9 is a perspective view of the actuatingarm;

Fig. 10 is a perspective view of the lockingand-cocking finger; and

Fig. 11 is a perspective view of the trigger or latch.

In the description and claims, the various parts are identified by specific names for convenience, but they are intended to be as generic in their application as the prior art will permit.

The particular form of the invention herein chosen for illustration includes a case 20, a dial 2|, a bracket 22 secured against the back-plate 23 of the case 2D in any suitable way, as, for example, by the nuts 24, which bracket 22 has a bell 25 secured thereto in any suitable way, as, for example, by the screw 26.

Within the case 20 is a clock-movement 2'| having front and rear movement-plates 28 and 29 secured together by three pillars 3i), which pillars are secured to the back-plate 23 by means of a nut 3|, and the two nuts 24 which also secure the bracket 22 in place.

A shaft or arbor 32 has a pointer 33 rigidly secured thereto and has a lug 34 secured to one end of a main-spring 35 which has its other end secured to a stud 36 which is secured to the front movement-plate 28.

The arbor 32 is provided with longitudinal ribs 31 which have a pressed or forced t with the bushing or collar 38 which carries a gear 39 rotatable relative to the bushing 38, but being frictionally clutched thereto by means of the hard wear-plates or disks 4D and 4| and the springdisk 42. The gear 39 forms part of the geartrain of the spring-actuated time-movement which employes an escapement and balancewheel construction of usual type.

An actuating-arm 43 is pivotally mounted at 44 on the back-plate 23 of the case, and in the particular form of the invention illustrated has a hammer-portion 45 for striking the bell 25 to produce a signal. In the particular construction illustrated in the drawings, the actuatingarm 43 is utilized for striking an alarm, but it will be appreciated that the actuating-arm may be used to actuate an electric switch or a mechanical device to perform any desired function at the end of the preselected time-interval. The actuating-arm 43 has a cooking-pin 46 firmly secured thereto, and is also provided with a latch-shoulder or cooking-shoulder or surface 41 adapted to be held in cocked or latched posifree said latching-trigger for engagement of its latch-lug with said latch-nose of the actuatingarm to cam the latter out of the path of return movement of said cooking-member and latch the same, and to also release said time-movement for operation thereof; and said time-movement in its operation acting to return said cooking-member to shift said latching-trigger and release said actuating-arm to operate a signal or the like.

3. An interval timer comprising: a time-movement; a cooking-member connected therewith; an actuating-arm for a signal or the like; a latching-trigger; and a spring having its opposite ends attached to said actuating-arm and latching-trigger to urge the same respectively away from and toward latching-engagement; the said cooking-member and actuating-arm normally interengaging to restrain said actuating-arm against the urge of said spring, and to lock said time-movement; said cooking-member being movable to shift said actuating-arm and to free said latching-trigger to the action of said spring for latching-engagement with said actuating-arm, and to release said time-movement for operation thereof; and said time-movement in its operation acting to return said cookingmember to shift said latching-trigger and release said actuating-arm to the action of said spring to operate a signal or the like.

4. An interval timer comprising: a time-movement; a cooking-member connected therewith; an actuating-arm for a signal or the like; a latching-trigger; the said actuating-arm and latching-trigger being respectively urged away from and toward latching-engagement; the said cooking-member and actuating-arm normally interengaging to restrain said actuating-arm against movement, and to lock said time-movement; said cooking-member being movable to shift said actuating-arm, and to free said latching-trigger for latching-engagement with said actuating-arm, and to also release said timemovement for operation thereof; and said timemovement in its operation acting to return said cooking-member to shift said latching-trigger and release said actuating-arm to operate a signal or the like; and connections between said cooking-member and said time-movement including a slip-clutch for securing independently of said time-movement manually-controlled partial-return movement of the said cookingmember.

5. An interval timer comprising: a time-movement; a cooking-member connected therewith; an actuating-arm for a signal or the like and provided with a latch-nose having a cam-surface; a latching-trigger having a latch-lug; the said actuating-arm and latching-trigger being respectively urged away from and toward latching-engagement; the said cooking-member and actuating-arm normally interengaging to restrain said actuating-arm from movement, and to lock said time-movement; said cooking-member being movable to shift said actuating-arm and to free said latching-trigger for engagement of its latch-lug with said latch-nose of the actuating-arm to cam the latter out of the path of return movement of said cooking-member and latch the same, and to also release said timemovement for operation thereof; and said timemovement in its operation acting to return said cooking-member to shift said latching-trigger and release said actuating-arm to operate a signal or the like; and connections between said cooking-member and said time-movement including a slip-clutch for securing independently of said time-movement manually-controlled partial-return movement of the said cookingmember.

6. An interval timer comprising: a time-movement; a cooking-member connected therewith; an actuating-arm for a signal or the like; a latching-trigger; a spring having its opposite ends attached to said actuating-arm and latching-trigger to urge the same respectively away from and toward latching-engagement; the said cooking-member and actuating-arm normally interengaging to restrain said actuating-arm against the urge of said spring, and to lock said time-movement; said cooking-member being movable to shift said actuating-arm and to free said latching-trigger to the action of said spring for latching-engagement with said actuatingarm, and to release said time-movement for operation thereof; and said time-movement in its operation acting to return said cocking-member to shift said latching-trigger and release said actuating-arm to the action of said spring to operate a signal or the like; and connections between said cooking-member and said timemovement including a slip-clutch for securing independently of said time-movement manuallycontrolled partial-return movement of the said cooking-member.

CHAS. B. SIMMONS.

Oct. 7,l 1941. A. BERGMANN rAL 2,253,480

DIAMOND WORKING PROCESS Filed NOV. 21, 1938 {Yu/enters: Alfred Bergmann,

Walther Dawhl, @tto Fr'ltsch,

Then* Attorn ey. 

